Slice or shred cooked chicken; add to pot. Add cilantro. Heat
through, about 1 minute. Ladle into soup bowls; top each with shredded
cheese and crumbled tortilla chips, if desired.

I made my own adjustments:

I prepared the chicken in the pressure
cooker. I removed the chicken and used the oil already there to begin
cooking the onions, garlic and a CAN of jalapeno chiles. When this has
begun to cook, I add TWO cans of black beans, the corn, a large can of
diced tomatoes, and the chicken broth. I did not add the cilantro or
the lime juice, because I was using what I had on hand. I also did not
add the cheese or tortilla chips.

If I were planning ahead, I might use the lime juice and SOME
cilantro. However, everyone—family, fellow teachers at school, and
friends—love it with my original variations.